Influence of Thermal Deformations on Accuracy Measurement With an Inspection Probe

The paper presents the results of impact studies heat generated in the cutting process on accuracy measurements using in-machine tools measurement systems - inspection probes. Conducted research works include determination of deformation values heat generated in the various machining processes materials. They are intended to estimate after what time from the end of machining, it is possible to measure, giving reliable and optimal results. Based on the results, it can be argued that the optimal time is the time after which changes in dimension caused by thermal deformation will be smaller than the measurement uncertainty of the object probe on the machine. This uncertainty depends largely on accuracy of the CNC machine. On the value of thermal deformations and the nature of their change over time also has a significant effect geometry of the workpiece (its dimensions, cross sections walls, shape) and the course of the machining process (technological parameters, machining strategies, etc.). In samples made of were used in the tests aluminum alloy EN AW-2024 T351 which is widely used in the aerospace industry, machined to parameters corresponding to the HPC (High Performance Cutting) technique.